1817828472 has 32 divisors (see below), whose sum is σ = 4546080000. Its totient is φ = 605741664.

The previous prime is 1817828429. The next prime is 1817828539. The reversal of 1817828472 is 2748287181.

It is a super-2 number, since 2×1817828472² = 6609000707227709568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73153 + ... + 94799.

It is an arithmetic number, because the mean of its divisors is an integer number (142065000).

Almost surely, 2^1817828472 is an apocalyptic number.

1817828472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1817828472 is an abundant number, since it is smaller than the sum of its proper divisors (2728251528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1817828472 is a wasteful number, since it uses less digits than its factorization.

1817828472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25155 (or 25151 counting only the distinct ones).

The product of its digits is 401408, while the sum is 48.

The square root of 1817828472 is about 42635.9997185477. Note that the first 3 decimals coincide. The cubic root of 1817828472 is about 1220.4433737412.

The spelling of 1817828472 in words is "one billion, eight hundred seventeen million, eight hundred twenty-eight thousand, four hundred seventy-two".